Pressing machine



Sept. 27, 1932. T. B. M CARTHY PRESSING MACHINE Original Filed April 1924 2 Sheets-$heet I N VEN TOR.

A TTORNEYS Sept. 27; 1932. m. MCCARTHY 1 8 I PRESSING MACHINE 2 Sheets-Sheet 2 Original Filed April 4, 1924 0 I I N VEN TOR.

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A TTORNEYS Patented Sept. 27, 1932 UNHTED STATES PAT ENT I GFFEQE 1 TIMOTHY B. MCCARTHY, or SYRACU$E, .NEW YORK, ASSIGNOR, ,B MESNE ASSIGN- MENTS, TO THE PROSPERITY COMPANY,

INCL, A. CORPORATION OF NEW YORK DRESSING MACHINE Application filed April 4, 1924, Serial This invention relates to pressing Inachines, which are operated by power, and particularly a. fluid power, as steam, or air, and has for its object a particularly simple and eflicient automatic means for stopping or rendering ineffective the operation of the fluid motor, in case the movable pressing element or a guard associated therewith encounters an obstruction, as the hand or arm of the operator, as'the movable pressing element is being moved toward its closed position.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views. 7

Figures 1 and 2 are respectively a side elevation and a rear elevation of a machine embodying my invention.

Figure 3 is a fragmentary view illustrating the operation of the guard.

This pressing machine comprises generally coacting pressing elements, onev of which is movable toward and from the other, actuating means for the movable pressing element, comprising a motor as a fluid motor, means as a manually operable control valve for controlling the flow of steam or other fluid into and from the motor, a guard carried by the movable pressing element and being normally stationary, and being capable of movement when the guard encounters an obstruction, and means operated by the guard when so encountering the obstruction to render the motor ineffective.

In the illustrated embodiment of my invention the motor is rendered ineffective by the movement of the guard which closes a normally open valve in the feed conduit to the cylinder and also for opening a supplementary exhaust valve in a conduit leading from or communicating with the live side of the piston or the portion of the cylinder in which the live fluid or steam is permitted to flow by the controlling valve to actuate the piston to close the press.

This invention is here illustrated as embodied in a type of press having a lower No. 704,136. Renewed July 8, 1930.

to one end of the cylinder and actuate the piston and move the press head to closed position, and then is operated to another posi-- tion permitting the steam to pass to the other end of the cylinder and actuate the piston and move the press head upwardly to its open position. In the typeof machine if the operator is engaged in smoothing out' the garment on the buck while he opens the control valve he is liable to have his hand caught between the buck and the head, and receive serious injury by the pressure orby the heat from the buck and head, it bein understood that the head and buck are heate This invention prevents the actuation of the press head sufficiently to injure the operator.

1 designates the lower pressing element or buck, which is mounted upon a suitable standard 2, usually termed as a goose neck, which in turn is mounted upon a frame or table 3, or any suitable construction. 4 is a work table mounted on the frame 3, below the buck 1.

5 designates the press head, which is carried by a yoke or lever 6, hinged or pivoted between its ends at 7, to an upwardly extending standard 8, on the rear side of the machine, the forward arms of the lever being suitably connected to the head 5 to carry the same, and the rear arm 9 being connected to the actuating mechanism.

- 1O designates the cylinder of the actuating mechanism, 11 is the piston movable therein, and connected by a piston rod 12 to a link 13. which is pivoted at 14c to the piston rod, and at 15 to the arm 9 of the lever 6, the cylinder being suitably fixed to a bracket 16 carried by the frame.

18 designates the feed-pipe or conduit for a motive fluid, as steam, this feed pipe being shown as extending upwardly to near the axis 7 of the lever 6, and as having a branch as 19, extending downwardly to the casing 20 of the control valve, another branch 21 leading from the feed pipe substantially coincident of the axis 7 of the lever 6 to the buckl and press head 5 in order to heat them, as will be understood by those skilled in the art. 21, 21 designate return pipes from the buck 1 and head 5. 21 is a feed pipe tothe buck 1.

The steam passes from the valve fcasing 20 of the control valve through suitable pipes 22 and 23 to opposite ends of the cylinder,

. line position Fig. 1, operates the valve to per mit the steam to enter'into the left end of the cylinder and actuate the piston to close the press, the right end of the cylinder to the exhaust pipe 29 and that the operating of the lever 24 from the dotted line position to the full line position, opens the normal exhaust pipe 29 to the left end of the cylinder and also opens the inlet to the right end of the cylinder, so that,the piston is actuated to the left to open the press. A supplementary exhaust pipe 30, leads from the live end of the cylinder or the end of the cylinder which is open to the incoming steam, whenthe head 5 is open or up, this pipe being always open insofar as the control valve in the casing 20 is con-- cerned and being normally closed byvalve 31 in the supplementary exhaust pipe 30. The pipe 30 communicates with the exhaust 29.

32 is a normally open valve in the feed pipe 18, and 31 a closed valve, these valves being operated, by a lever 33 common to both, and

tending to be actuated by means as a spring 34 connected to the lever 33 and to the frame. This spring 34 tends to open the valve 31 and close the valve 32.

35 is a normally stationary at 36 to the press head and having a guard portion 37 arranged to pass in front of the front edge of the buck 1 whenthe press is closed, the guard being connected to the lever 33 through suitable connections for normally preventing the operation of the lever 33 by the spring 34. As here shown the guard is formed with a ratchet tooth 38 coacting with a shoulder 39, on a slide or detent 40 on the ,upper side of the head 1, this slide" or detent 40 being connected to the lever 33 by connections, portions of which extend radially relatively to the axis of the lever 6 in order to'be shut off the steam to the cylinder. and also to open the exhaust port from guard pivoted dotted line position Fig. 1, the control valve is thrown open to permit the steam to enter into. the left end of the cylinder 10, and force the piston 11 rearwardly and thus close the press, when the press is closed it is held closed by a steam pressure. If, however, during the closing of the press the guard 35 encounters an obstruction, as the handfor arm of the operator, as shown in Fig. 3,

causing the guard to tilt onits pivot and disengaging the tooth 38 from the shoulder 39 of the slide 40. The lever 33 is thus released of the holding action ofthe spring 34, and the lever pulled downwardly to open the valve 31, and thus permit the steam to exhaust in the left end of the cylinder and close the valve 32 in the feed pipe 18, and thus Thus the press head is stopped before the operator is injured. The parts can be restored to their normal position by pulling forwardly, on the slide 40 until it ratchets into engagement with the guard 35, whereupon the press will close or open in accordance with the way the lever 24 is shifted.

What I claim is:

1. In a pressing machine, the'combination of coacting pressing element, one of which is movable toward and from the other, means for actuating the movable element. comprising a cylinder, inder, and connections between the piston and the movable element, a manually operable' valve for controlling the flow of motive fluid to and from the cylinder, a supplementary exhaust conduit leading from the active end of thecylinder and the side of the piston receiving the pressure of the motive fluid during closing of the press, and a valve in the supplementary exhaust conduit, a normally stationary guard carried by the movable element, and arranged to be moved by an obstruction in the path of the guard during closing of the press, and connections between the guard and said valve to open the same, when the guard encounters an obstruction.

2. In a pressing machine, the combination of coacting pressing elements, one of which is movable toward and from the other, means for actuating the movable element, comprising a cylinder, intake and exhaust pipes for the cylinder, and a valve controlling said pipes, a supplementary exhaust pipe, a piston movable in the cylinder, and connections between the cylinder and the movable element, a guard carried by the movable elea piston movable in the cylment, and means operated by the guardwhen the same encounters an obstruction during closing of the press to cut off thesupply of motive fluid through the intake pipe and to exhaust the motive fluid from the active side of the piston through the supplementary exhaust. r

3. In a pressing machine, the combination of coacting pressing elements, one of which is movable toward and from the other, means for supporting and actuating the movable pressing element, comprising a cylinder, a piston movable in the cylinder, and connected to the movable element, a supply-conduit and a normal exhaust conduit connected to the cylinder, and a suitable manually operable valve for controlling the flow of fluid into and out of the cylinder, through the supply and exhaust conduits, a supplementary exhaust, a guard carried by the movable pressing element, and a normally open valve in the supply conduit, and a normally closed valve in the supplementary exhaust conduit, means tending to move the last named valves from the normal positions, and connections.

between the guard and the latter valves to operate the same when the guard encounters an obstruction during closin of the press.

4:. In a pressing machine, the combination of coacting pressing elements, one of which is movable toward and from tne other, means for supporting and actuating the movable pressing element, comprising a leycr, a cylinder, a piston movable in the cylinder, and connected to the lever, a manually operable valve for controlling the flow of motive fluid to and from the cylinder, a normally stationary guard carried by the movable ele ment, and arranged to be moved by an obstruction in the path of the guard during closing of the press, and means operated by the. guard to prevent actuation of the movable element by the p1ston when the guard encounters the obstruction, the means operated by the guard including connections portions of which extend radially relative to the axis of the lever.

5. In a pressing machine, the combinatlon of coacting pressing elements, one of which is movable toward and from the other, means for actuating the movable pressing element, comprising a cylinder, a piston movable 1n the cylinder, and connected to the movable pressing element, a feed pipe for motive fluid to the cylinder, and an exhaust pipe, a manually operable control valve for controllin g the flow of fluid to the cylinder and for controlling the exhaust pipe, a normally sta tionary guard carriedby the movable pressing element, a normallyopen valve in the feed pipe, and connections between the guard and the valve normally holding the valve from being closed, the guard being arranged to be moved and close said last mentioned valve during the closing of the press by obstructions in the path of the guard.

6. In a pressing machine, the combination of coacting pressing elements, one of which is movable toward and from the other, means;

for actuating the movable pressing element, comprising a cylinder, a piston movable in the cylinder and connected to the movable pressing element, a feed pipe for motive fluid to the cylinder, and a normal exhaust pipe lt 'lili an; i

and also a supplemental exhaust pipe 'ar plementary exhaust pipe, means tending to 2 close the normally open valve and open the normally closed valve, and connections between the guard and the said normally closed and open valves normally holding the normally open valve from being closed, and the normally closed valve frombeing opened by said means, the guard being arranged to be moved during closing of the press by an obstruction in the pat-h of the guard and release said connections.

7. In a pressing machine, the combination of coacting pressing elements, one of which is movable toward and from the other, means for actuating the movable element comprising a fluid motor, a manually operable valve for controlling the flow of motive fluid to the motor, an exhaust conduit leading from the pressure'side of the motor, a normally closed valve in the exhaust conduit, a normally sta tionary guard carried by the movable element and arranged to be moved by an obstruction in the path of the guard during the closing of the press, and connections between the guard and the exhaust valve to open the same when the guard encounters an obstruction. 8. In a pressing machine, the combination of coactingpressing elements, one of which is movable toward and from the other, means for supporting and actuating the movable pressing element comprising a fluid motor, a supply conduit and an exhaust conduit connected to the motor, a manually operable valve for controlling the flow of fluid into and out of the cylinder, a normally open valve in the supply conduit, a normally closed exhaust valve in the exhaust conduit, a guard carried by the movable element, and connections between the guard and the normally openvalve in the supply conduit and the normally closed valve in the exhaust conduit to operate the same when the guard encounters an obstruction during the closing of the press.

9. In a pressing machine, a buck, a head movable toward and from the buck, means for controlling the actuation of the head inies cluding a conduit for. a motive fluid, a normally closed valve in the conduit, manual means for opening the valve,-a guard car.- ried by the head and movable as a unit rigid therewith in the normal operation of the machine, a second normally closed exhaust valve connected in the conduit and connections operated by the guard to open the second valve when the guard is moved relatively to the head.

10. In a pressing machine, a buck, a head movable toward and from the buck, manual means for controlling the actuation of the head including a conduit for a fluid, a normally closed intake valve in said conduit, means for opening the intake valve, a normally closed exhaust valve connected in said conduit, a guard carried by the head and movable as a rigid unit therewith in the normal operation of the machine, and connections operated by the relative movement of the guard relative to the movable pressing element to stop the eflective flow of working fluid to the motor means; and means operable independently of the guard to control the flow of working fluid to the motor means.

In testimony whereof, I have hereunto signed my name, at Syracuse, in the county of Onondaga, and State of New York, this 13th day of March, .1924.

TIMOTHY B. MCCARTHY.

of the guard and the head to open the exhaust I valve when the guard is moved relatively to the head.

11. In a pressing machine, a buck, a head movable toward and from the buck, means for controlling the actuating of the head including a conduit for a motive fluid, a normally closed valve in the conduit, manual means for opening the valve, a guard carried by the head and movable as a rigid unit therewith in the normal operation of the machine, and means operated by the relative movementof the guard and the head to prevent the eflective flow of motive fluid through the conduit.

13. In a pressing machine cooperative platen pressing elements, one of which is movable toward and from the other; a guard mounted on the movable pressing element on the front side thereofand extending forf wardly and downwardly below the front edge of the pressing element; actuating means for the movable pressing element; fluid motor means for o aeratin the actuatl e ing means; conduits for the supply of work- 7. ing fluid to and from the motor means;

means for holding the guard in a normal position in which it is inoperative to control the supply of working fluid to the motor means; means associated with the working "I fluid conduits and operated by movement 

